Added section in INSTALL on creating relocatable binary on windows.

INSTALL

@@ -94,6 +94,37 @@ you will need [zip-archive], [blaze-html], and [highlighting-kate].
     generate a script that can be run to register the package at
     install time.
 
+Creating a relocatable Windows binary
+-------------------------------------
+
+On Windows it is possible to compile pandoc such that it
+(and its data files) are "relocatable."  You can put the relocatable
+binary in any directory (even on a USB drive), and it will look for its
+data files there.
+
+    cabal install --flags="embed_data_files" citeproc-hs
+    cabal install --flags="executable -library" --datasubdir=
+
+You can find `pandoc.exe` in `dist/build/pandoc`.  Copy this wherever
+you please, and copy the following data files to the same place:
+
+    README
+    COPYRIGHT
+    COPYING
+    reference.odt
+    reference.docx
+    epub.css
+    default.csl
+    templates/
+    data/
+    s5/
+    slidy/
+    dzslides/
+    pcre-license.txt
+    pcre3.dll
+
+This is essentially what the binary installer does.
+
 [zip-archive]: http://hackage.haskell.org/package/zip-archive
 [highlighting-kate]: http://hackage.haskell.org/package/highlighting-kate
 [blaze-html]: http://hackage.haskell.org/package/blaze-html